Diff of /trunk/src/map-tool.c

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revision 34 by harbaum, Wed Jul 29 19:24:15 2009 UTC revision 151 by harbaum, Fri Oct 30 20:09:13 2009 UTC
# Line 1  Line 1 
1  /*  /*
2   * Copyright (C) 2008 Till Harbaum <till@harbaum.org>.   * Copyright (C) 2008-2009 Till Harbaum <till@harbaum.org>.
3   *   *
4   * This file is part of GPXView.   * This file is part of GPXView.
5   *   *
# Line 17  Line 17 
17   * along with GPXView.  If not, see <http://www.gnu.org/licenses/>.   * along with GPXView.  If not, see <http://www.gnu.org/licenses/>.
18   */   */
19    
20    /*
21     * http://topo.geofabrik.de/relief/${z}/${x}/${y}.png  8-15
22     * http://topo.geofabrik.de/trail/${z}/${x}/${y}.png   8-15
23     */
24    
25    /*
26     * TODO:
27     * - draw caches only once
28     * - prefer duplicates from selected files
29     * - make semi-transparent caches selectable
30     */
31    
32  #include "gpxview.h"  #include "gpxview.h"
33    #include "converter.h"
34  #include <math.h>    // for isnan  #include <math.h>    // for isnan
35    
36  #ifdef ENABLE_OSM_GPS_MAP  #ifdef ENABLE_OSM_GPS_MAP
37  #include "osm-gps-map.h"  #include "osm-gps-map.h"
38    #include "osm-gps-map-osd-classic.h"
39    #endif
40    
41    #if defined(USE_MAEMO) && (MAEMO_VERSION_MAJOR == 5)
42    #include <gdk/gdkx.h>
43    #include <X11/Xatom.h>
44  #endif  #endif
45    
46  typedef struct {  /* default values */
47    appdata_t *appdata;  #define MAP_SOURCE  OSM_GPS_MAP_SOURCE_OPENCYCLEMAP
48    GtkWidget *widget;  #define GPS_DEFAULT_ZOOM 13
   GtkWidget *zoomin, *zoomout, *gps;  
   gint handler_id;  
 } map_context_t;  
49    
50  #define PROXY_KEY  "/system/http_proxy/"  #define PROXY_KEY  "/system/http_proxy/"
51    
# Line 63  static const char *get_proxy_uri(appdata Line 79  static const char *get_proxy_uri(appdata
79    
80        g_free(host);        g_free(host);
81      }      }
82        return proxy_buffer;
83    }    }
84    
85    return proxy_buffer;    return NULL;
86  }  }
87    
88  static void map_zoom(map_context_t *context, int step) {  static void
89    int zoom;  cb_map_gps(osd_button_t but, map_context_t *context) {
   OsmGpsMap *map = OSM_GPS_MAP(context->widget);  
   g_object_get(map, "zoom", &zoom, NULL);  
   zoom = osm_gps_map_set_zoom(map, zoom+step);  
90    
91    /* enable/disable zoom buttons as required */    if(but == OSD_GPS) {
92    gtk_widget_set_sensitive(context->zoomin, zoom<17);      pos_t *refpos = get_pos(context->appdata);
93    gtk_widget_set_sensitive(context->zoomout, zoom>1);      if(refpos && !isnan(refpos->lat) && !isnan(refpos->lon)) {
94          gint zoom;
95          g_object_get(OSM_GPS_MAP(context->widget), "zoom", &zoom, NULL);
96          if(zoom < 10)
97            osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget),
98                                      refpos->lat, refpos->lon, GPS_DEFAULT_ZOOM);
99          else
100            osm_gps_map_set_center(OSM_GPS_MAP(context->widget),
101                                   refpos->lat, refpos->lon);
102    
103          /* re-enable centering */
104          g_object_set(context->widget, "auto-center", TRUE, NULL);
105        } else {
106          /* no coordinates given: display the entire world */
107          osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget),
108                                    0.0, 0.0, 1);
109        }
110      }
111  }  }
112    
113  static gboolean  static int dist2pixel(map_context_t *context, float km, float lat) {
114  cb_map_zoomin(GtkButton *button, map_context_t *context) {    return 1000.0*km/osm_gps_map_get_scale(OSM_GPS_MAP(context->widget));
115    map_zoom(context, +1);  }
116    
117    static gboolean map_gps_update(gpointer data) {
118      map_context_t *context = (map_context_t*)data;
119      static gboolean goto_is_enabled = FALSE;
120    
121      /* get reference position ... */
122      pos_t *refpos = get_pos(context->appdata);
123      gboolean ok = (refpos!= NULL) && !isnan(refpos->lat) && !isnan(refpos->lon);
124    
125      /* ... and enable "goto" button if it's valid */
126      if(ok != goto_is_enabled) {
127        osm_gps_map_osd_enable_gps (OSM_GPS_MAP(context->widget),
128                    OSM_GPS_MAP_OSD_CALLBACK(ok?cb_map_gps:NULL), context);
129        goto_is_enabled = ok;
130      }
131    
132      if(ok) {
133        float heading = NAN;
134        int radius = 0;
135    
136        if(context->appdata->use_gps) {
137          heading = gps_get_heading(context->appdata);
138    
139          /* get error */
140          float eph = gps_get_eph(context->appdata);
141          if(!isnan(eph))
142            radius = dist2pixel(context, eph/1000, refpos->lat);
143        }
144    
145        /* TODO: in order to save energy: only draw if state actually changed */
146    
147        g_object_set(context->widget, "gps-track-highlight-radius", radius, NULL);
148        osm_gps_map_draw_gps(OSM_GPS_MAP(context->widget),
149                             refpos->lat, refpos->lon, heading);
150      } else
151        osm_gps_map_clear_gps(OSM_GPS_MAP(context->widget));
152    
153      return TRUE;
154    }
155    
156    static void map_draw_cache(GtkWidget *map, cache_t *cache, gboolean semi) {
157      GdkPixbuf *icon = icon_get(semi?ICON_CACHE_TYPE_SEMI:ICON_CACHE_TYPE,
158                                 cache->type);
159    
160      /* check if there's also an overwritten coordinate */
161      if(cache->notes && cache->notes->override) {
162        GdkPixbuf *over = icon_get(ICON_MISC, 1);
163    
164        osm_gps_map_add_image(OSM_GPS_MAP(map),
165              cache->notes->pos.lat, cache->notes->pos.lon, icon);
166    
167        osm_gps_map_add_image(OSM_GPS_MAP(map),
168              cache->notes->pos.lat, cache->notes->pos.lon, over);
169      } else {
170        if(!isnan(cache->pos.lat) && !isnan(cache->pos.lon))
171          osm_gps_map_add_image(OSM_GPS_MAP(map),
172                                cache->pos.lat, cache->pos.lon, icon);
173      }
174    }
175    
176    static void map_draw_gpx(appdata_t *appdata,
177                             GtkWidget *map, gpx_t *gpx,
178                             cache_t *nav, gboolean semi) {
179      if(!gpx->notes_loaded) {
180        notes_load_all(appdata, gpx);
181        gpx->notes_loaded = TRUE;
182      }
183    
184      cache_t *cache = gpx->cache;
185      while(cache) {
186        /* if nav is given draw all other caches semitransparent. */
187        /* if nav is not given do what semi sais */
188        map_draw_cache(map, cache, nav?(cache != nav):semi);
189        cache = cache->next;
190      }
191    }
192    
193    /* draw geocaches and set window title */
194    static void map_setup(map_context_t *context) {
195      char *name = NULL;
196    
197      if(!context->appdata->cur_gpx && !context->appdata->cur_cache) {
198        if(context->state != MAP_ALL) {
199          printf("map_setup(ALL)\n");
200    
201    #ifdef OSD_NAV
202          /* no navigation in this mode */
203          osm_gps_map_osd_clear_nav (OSM_GPS_MAP(context->widget));
204    #endif
205    
206          /* clear all existing cache images */
207          osm_gps_map_clear_images (OSM_GPS_MAP(context->widget));
208    
209          /* draw all geocaches and none is semi-transparent */
210          gpx_t *gpx = context->appdata->gpx;
211          while(gpx) {
212            map_draw_gpx(context->appdata, context->widget, gpx, NULL, FALSE);
213            gpx = gpx->next;
214          }
215          name = g_strdup(_("all"));
216          context->state = MAP_ALL;
217        }
218      } else if(!context->appdata->cur_cache) {
219        if(context->state != MAP_GPX) {
220          printf("map_setup(GPX)\n");
221    
222    #ifdef OSD_NAV
223          /* no navigation in this mode */
224          osm_gps_map_osd_clear_nav (OSM_GPS_MAP(context->widget));
225    #endif
226    
227          /* clear all existing ccahe images */
228          osm_gps_map_clear_images (OSM_GPS_MAP(context->widget));
229    
230          /* draw all geocaches and all other gpx files are semi-transparent */
231          gpx_t *gpx = context->appdata->gpx;
232          while(gpx) {
233            map_draw_gpx(context->appdata, context->widget, gpx, NULL,
234                         gpx != context->appdata->cur_gpx);
235            gpx = gpx->next;
236          }
237    
238          name = g_strdup(context->appdata->cur_gpx->name);
239          context->state = MAP_GPX;
240        }
241      } else {
242        cache_t *cache = context->appdata->cur_cache;
243    
244        printf("map_setp(CACHE)\n");
245    
246        /* no balloons in this mode */
247        context->balloon = NULL;
248        osm_gps_map_osd_clear_balloon (OSM_GPS_MAP(context->widget));
249    
250        /* clear all existing ccahe images */
251        osm_gps_map_clear_images (OSM_GPS_MAP(context->widget));
252    
253        /* draw all geocaches and all but selected one are semi-transparent */
254        gpx_t *gpx = context->appdata->gpx;
255        while(gpx) {
256          map_draw_gpx(context->appdata, context->widget, gpx, cache, FALSE);
257          gpx = gpx->next;
258        }
259    
260        name = g_strdup(cache->name);
261        context->state = MAP_CACHE;
262    
263        /* navigation in this mode! */
264        pos_t cpos = gpx_cache_pos(cache);
265    
266    #ifdef OSD_NAV
267        osm_gps_map_osd_draw_nav (OSM_GPS_MAP(context->widget),
268                                  context->appdata->imperial,
269                                  cpos.lat, cpos.lon, cache->name);
270    #else
271    #warning OSD_NAV not defined!
272    #endif
273      }
274    
275      if(name) {
276        char *title = g_strdup_printf(_("Map - %s"), name);
277        g_free(name);
278    
279        gtk_window_set_title(GTK_WINDOW(context->window), title);
280    
281        g_free(title);
282      } else
283        printf("map_setup(keep)\n");
284    }
285    
286    static gboolean on_map_configure(GtkWidget *widget,
287                                     GdkEventConfigure *event,
288                                     map_context_t *context) {
289    
290      /* for some reason there's a configure event with 1/1 */
291      /* on diablo. We just ignore this! */
292    
293      printf("on_map_configure %d %d\n",
294             widget->allocation.width,
295             widget->allocation.height);
296    
297      if(!context->map_complete &&
298         (widget->allocation.width > 100) &&
299         (widget->allocation.height > 100)) {
300    
301        /* setup cache state */
302        map_setup(context);
303    
304        /* set default values if they are invalid */
305        if(!context->appdata->map.zoom ||
306           isnan(context->appdata->map.pos.lat) ||
307           isnan(context->appdata->map.pos.lon)) {
308          printf("no valid map position found\n");
309    
310          pos_t *refpos = get_pos(context->appdata);
311          if(refpos && !isnan(refpos->lat) && !isnan(refpos->lon)) {
312            printf("use refpos\n");
313    
314            /* use gps position if present */
315            context->appdata->map.pos = *refpos;
316            context->appdata->map.zoom = GPS_DEFAULT_ZOOM;
317          } else {
318            printf("use zero pos\n");
319    
320            /* use world map otherwise */
321            context->appdata->map.pos.lat = 0.0;
322            context->appdata->map.pos.lon = 0.0;
323            context->appdata->map.zoom = 1;
324          }
325        }
326    
327        /* jump to initial position */
328        printf("osm_gps_map_set_mapcenter(%f,%f,%d)\n",
329               context->appdata->map.pos.lat,
330               context->appdata->map.pos.lon,
331               context->appdata->map.zoom);
332    
333        osm_gps_map_set_mapcenter(OSM_GPS_MAP(context->widget),
334                                  context->appdata->map.pos.lat,
335                                  context->appdata->map.pos.lon,
336                                  context->appdata->map.zoom);
337        context->map_complete = TRUE;
338      }
339    
340    return FALSE;    return FALSE;
341  }  }
342    
343    static void
344    map_cachelist_nearest(cache_t *cache, pos_t *pos,
345                          cache_t **result, float *distance) {
346    
347      while(cache) {
348        pos_t cpos = gpx_cache_pos(cache);
349    
350        float dist =
351          pow(cpos.lat - pos->lat, 2) +
352          pow(cpos.lon - pos->lon, 2);
353    
354        if(!(dist > *distance)) {
355          *result = cache;
356          *distance = dist;
357        }
358    
359        cache = cache->next;
360      }
361    }
362    
363    static cache_t *map_closest(map_context_t *context, pos_t *pos) {
364      cache_t *result = NULL;
365      float distance = NAN;
366    
367      if(!context->appdata->cur_gpx && !context->appdata->cur_cache) {
368        /* search all geocaches */
369        gpx_t *gpx = context->appdata->gpx;
370        while(gpx) {
371          map_cachelist_nearest(gpx->cache, pos, &result, &distance);
372          gpx = gpx->next;
373        }
374      } else if(context->appdata->cur_gpx) {
375        map_cachelist_nearest(context->appdata->cur_gpx->cache,
376                              pos, &result, &distance);
377      } else
378        result = context->appdata->cur_gpx->cache;
379    
380      return result;
381    }
382    
383    /* translate between osm-gps-map positions and gpxview ones */
384    pos_t coord2pos(coord_t coo) {
385      pos_t pos;
386      pos.lat = rad2deg(coo.rlat);
387      pos.lon = rad2deg(coo.rlon);
388      return pos;
389    }
390    
391    #define CLICK_FUZZ (24)
392    
393  static gboolean  static gboolean
394  cb_map_zoomout(GtkButton *button, map_context_t *context) {  on_map_button_press_event(GtkWidget *widget,
395    map_zoom(context, -1);                              GdkEventButton *event, map_context_t *context) {
396    
397      OsmGpsMap *map = OSM_GPS_MAP(context->widget);
398    
399      /* check if we actually clicked parts of the OSD */
400      if(osm_gps_map_osd_check(map, event->x, event->y) != OSD_NONE)
401        return FALSE;
402    
403      /* got a press event without release event? eat it! */
404      if(context->press_on != NULL) {
405        printf("PRESS: already\n");
406        return FALSE;
407      }
408    
409      pos_t pos =
410        coord2pos(osm_gps_map_get_co_ordinates(map, event->x, event->y));
411    
412      cache_t *nearest = map_closest(context, &pos);
413      if(nearest) {
414        pos_t cpos = gpx_cache_pos(nearest);
415    
416        float dist = gpx_pos_get_distance(pos, cpos, FALSE);
417        if(dist2pixel(context, dist, cpos.lat) < CLICK_FUZZ)
418          context->press_on = nearest;
419      }
420    
421    return FALSE;    return FALSE;
422  }  }
423    
424  #define DEG2RAD(a)  ((a) * M_PI / 180.0)  static void
425    cairo_draw_pixbuf(cairo_t *cr, GdkPixbuf *buf, gint x, gint y) {
426      /* convert the pixbuf into something cairo can handle */
427    
428      // Create a new ImageSurface
429      cairo_surface_t *image_surface =
430        cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
431                                   gdk_pixbuf_get_width(buf),
432                                   gdk_pixbuf_get_height(buf));
433    
434      // Create the new Context for the ImageSurface
435      cairo_t *context = cairo_create(image_surface);
436    
437      // Draw the image on the new Context
438      gdk_cairo_set_source_pixbuf(context, buf, 0.0, 0.0);
439      cairo_paint(context);
440    
441      // now draw this onto the original context
442      cairo_set_source_surface(cr, image_surface, x, y);
443    
444      cairo_paint(cr);
445    }
446    
447    #ifndef BIG_BALLOONS
448    #define LINE_SKIP  7
449    #else
450    #define LINE_SKIP  12
451    #endif
452    
453    static void
454    balloon_cb(osm_gps_map_balloon_event_t *event, gpointer data) {
455      printf("balloon event: ");
456    
457      map_context_t *context = (map_context_t*)data;
458      cache_t *cache = context->balloon;
459    
460      if(event->type == OSM_GPS_MAP_BALLOON_EVENT_TYPE_DRAW) {
461        printf("draw\n");
462    
463    #if 0
464        /* draw pink background to check clipping */
465        cairo_rectangle (event->data.draw.cr,
466                         event->data.draw.rect->x-20, event->data.draw.rect->y-20,
467                         event->data.draw.rect->w+40, event->data.draw.rect->h+40);
468        cairo_set_source_rgba (event->data.draw.cr, 1, 0, 0, 0.3);
469        cairo_fill_preserve (event->data.draw.cr);
470        cairo_set_line_width (event->data.draw.cr, 0);
471        cairo_stroke (event->data.draw.cr);
472    #endif
473    
474        /* leave a little border top and left */
475        gint x = event->data.draw.rect->x, y = event->data.draw.rect->y;
476    
477        /* draw the cache type icon ... */
478        GdkPixbuf *icon = icon_get(ICON_CACHE_TYPE, cache->type);
479        cairo_draw_pixbuf(event->data.draw.cr, icon, x, y);
480    
481        if(cache->notes && cache->notes->override) {
482          GdkPixbuf *over = icon_get(ICON_MISC, 1);
483          cairo_draw_pixbuf(event->data.draw.cr, over, x, y);
484        }
485    
486        /* ... and right of it the waypoint id */
487        cairo_text_extents_t extents;
488    
489        if(cache->id) {
490          cairo_select_font_face (event->data.draw.cr, "Sans",
491                                  CAIRO_FONT_SLANT_NORMAL,
492                                  CAIRO_FONT_WEIGHT_BOLD);
493    
494    #ifndef BIG_BALLOONS
495          cairo_set_font_size (event->data.draw.cr, 20.0);
496    #else
497          cairo_set_font_size (event->data.draw.cr, 36.0);
498    #endif
499    
500          cairo_text_extents (event->data.draw.cr, cache->id, &extents);
501    
502          /* display id right of icon vertically centered */
503          x += gdk_pixbuf_get_width(icon) + 5;
504          y += (gdk_pixbuf_get_height(icon) + extents.height)/2;
505          cairo_move_to (event->data.draw.cr, x, y);
506          cairo_set_source_rgba (event->data.draw.cr, 0, 0, 0, 1);
507          cairo_show_text (event->data.draw.cr, cache->id);
508          cairo_stroke (event->data.draw.cr);
509    
510          y += (gdk_pixbuf_get_height(icon) - extents.height)/2 + LINE_SKIP;
511        } else
512          y += gdk_pixbuf_get_height(icon);
513    
514        /* return to the left border and below icon/text */
515        x = event->data.draw.rect->x;
516    
517        /* everything from here uses the same font */
518        cairo_select_font_face (event->data.draw.cr, "Sans", CAIRO_FONT_SLANT_NORMAL,
519                                CAIRO_FONT_WEIGHT_NORMAL);
520    #ifndef BIG_BALLOONS
521        cairo_set_font_size (event->data.draw.cr, 14.0);
522    #else
523        cairo_set_font_size (event->data.draw.cr, 22.0);
524    #endif
525    
526        if(cache->name) {
527          /* draw cache name */
528          cairo_text_extents (event->data.draw.cr, cache->name, &extents);
529          y += extents.height;
530          cairo_move_to (event->data.draw.cr, x, y);
531          cairo_set_source_rgba (event->data.draw.cr, 0, 0, 0, 1);
532          cairo_show_text (event->data.draw.cr, cache->name);
533          cairo_stroke (event->data.draw.cr);
534    
535          /* return to the left border and below text */
536          y += LINE_SKIP;
537          x = event->data.draw.rect->x;
538        }
539    
540        if(cache->terrain) {
541          /* draw cache rating */
542          const char *terrain = "Terrain:";
543          icon = icon_get(ICON_STARS, (int)(cache->terrain*2-2));
544          cairo_text_extents (event->data.draw.cr, _(terrain), &extents);
545          y += (gdk_pixbuf_get_height(icon) + extents.height)/2;
546    
547          /* draw "Terrain:" string */
548          cairo_move_to (event->data.draw.cr, x, y);
549          cairo_set_source_rgba (event->data.draw.cr, 0, 0, 0, 1);
550          cairo_show_text (event->data.draw.cr, _(terrain));
551          cairo_stroke (event->data.draw.cr);
552          x += extents.width + 2;
553    
554          /* draw terrain stars */
555          cairo_draw_pixbuf(event->data.draw.cr, icon, x, y -
556                            (gdk_pixbuf_get_height(icon) + extents.height)/2);
557    
558          x += gdk_pixbuf_get_width(icon) + LINE_SKIP;
559        y -= (gdk_pixbuf_get_height(icon) + extents.height)/2;
560        }
561    
562        if(cache->difficulty) {
563          const char *difficulty = "Difficulty:";
564          cairo_text_extents (event->data.draw.cr, _(difficulty), &extents);
565          y += (gdk_pixbuf_get_height(icon) + extents.height)/2;
566    
567          /* draw "Difficulty:" string */
568          cairo_move_to (event->data.draw.cr, x, y);
569          cairo_set_source_rgba (event->data.draw.cr, 0, 0, 0, 1);
570          cairo_show_text (event->data.draw.cr, _(difficulty));
571          cairo_stroke (event->data.draw.cr);
572          x += extents.width + 2;
573    
574          icon = icon_get(ICON_STARS, (int)(cache->difficulty*2-2));
575          cairo_draw_pixbuf(event->data.draw.cr, icon, x, y -
576                          (gdk_pixbuf_get_height(icon) + extents.height)/2);
577        }
578      } else if(event->type == OSM_GPS_MAP_BALLOON_EVENT_TYPE_CLICK) {
579        printf("click %s event at %d %d\n",
580               event->data.click.down?"down":"up",
581               event->data.click.x, event->data.click.y);
582    
583        /* make the main screen jump to that cache */
584        if(!event->data.click.down) {
585          if(context->appdata->cur_cache) {
586            printf("ERROR: no current cache should be visible!\n");
587          } else {
588            gpx_t *is_in = NULL;
589    
590            if(!context->appdata->cur_gpx) {
591              printf("click while in \"all\" view\n");
592    
593              /* we first need to figure out which gpx file this cache */
594              /* is in so we can open it first */
595              gpx_t *gpx = context->appdata->gpx;
596              while(gpx && !is_in) {
597                cache_t *cur = gpx->cache;
598                while(cur && !is_in) {
599                  if(cur == cache)
600                    is_in = gpx;
601                  cur = cur->next;
602                }
603                gpx = gpx->next;
604              }
605    
606              if(is_in)
607                gpxlist_goto_cachelist(context->appdata, is_in);
608    
609            } else
610              /* the simple case: there already is an open gpx file and */
611              /* we just jump into the "cache" view */
612              is_in = context->appdata->cur_gpx;
613    
614            if(is_in) {
615              printf("selecting %s in %s\n",
616                     cache->id,
617                     context->appdata->cur_gpx->name);
618    
619              cachelist_goto_cache(context->appdata, cache);
620    
621              /* give focus to main screen (important for maemo) */
622              printf("raising main window\n");
623              gtk_window_present(GTK_WINDOW(context->appdata->window));
624            }
625          }
626        }
627      } else if(event->type == OSM_GPS_MAP_BALLOON_EVENT_TYPE_REMOVED) {
628        printf("removed\n");
629        context->balloon = NULL;
630      }
631    }
632    
633  static gboolean  static gboolean
634  cb_map_gps(GtkButton *button, map_context_t *context) {  on_map_button_release_event(GtkWidget *widget,
635    pos_t *refpos = get_pos(context->appdata);                              GdkEventButton *event, map_context_t *context) {
636    if(refpos && !isnan(refpos->lat) && !isnan(refpos->lon)) {    OsmGpsMap *map = OSM_GPS_MAP(context->widget);
     printf("pos is %f %f\n", refpos->lat, refpos->lon);  
637    
638      osm_gps_map_set_center(OSM_GPS_MAP(context->widget),    /* in "MAP_CACHE" state only one cache is visible */
639             DEG2RAD(refpos->lat), DEG2RAD(refpos->lon));    /* and the map is in navigation mode. the balloon is */
640      /* pretty useless there */
641      if(context->press_on && (context->state != MAP_CACHE)) {
642    
643        coord_t coo;
644        coo = osm_gps_map_get_co_ordinates(map, event->x, event->y);
645    
646        pos_t pos =
647          coord2pos(osm_gps_map_get_co_ordinates(map, event->x, event->y));
648    
649        cache_t *nearest = map_closest(context, &pos);
650        if(nearest && nearest == context->press_on) {
651          pos_t cpos = gpx_cache_pos(nearest);
652    
653          float dist = gpx_pos_get_distance(pos, cpos, FALSE);
654          if(dist2pixel(context, dist, cpos.lat) < CLICK_FUZZ) {
655    
656            context->balloon = nearest;
657            osm_gps_map_osd_draw_balloon(map, cpos.lat, cpos.lon,
658                                         balloon_cb, context);
659          }
660        }
661        context->press_on = NULL;
662      } else {
663        /* save new map position */
664        gfloat lat, lon;
665        g_object_get(map, "latitude", &lat, "longitude", &lon, NULL);
666        context->appdata->map.pos.lat = lat;
667        context->appdata->map.pos.lon = lon;
668    }    }
669    
670    return FALSE;    return FALSE;
671  }  }
672    
673  static GtkWidget  static void on_window_destroy(GtkWidget *widget, map_context_t *context) {
674  *map_add_button(const gchar *icon, GCallback cb, gpointer data,    appdata_t *appdata = context->appdata;
675                  char *tooltip) {  
676    GtkWidget *button = gtk_button_new();    /* save map parameters */
677    gtk_button_set_image(GTK_BUTTON(button),    OsmGpsMap *map = OSM_GPS_MAP(context->widget);
678                         gtk_image_new_from_stock(icon, GTK_ICON_SIZE_MENU));    gint zoom;
679    g_signal_connect(button, "clicked", cb, data);    g_object_get(map, "zoom", &zoom, NULL);
680  #ifndef USE_MAEMO    context->appdata->map.zoom = zoom;
681    gtk_widget_set_tooltip_text(button, tooltip);  
682      gfloat lat, lon;
683      g_object_get(map, "latitude", &lat, "longitude", &lon, NULL);
684      context->appdata->map.pos.lat = lat;
685      context->appdata->map.pos.lon = lon;
686    
687      gint source;
688      g_object_get(map, "map-source", &source, NULL);
689      context->appdata->map.source = source;
690    
691    #if MAEMO_VERSION_MAJOR == 5
692      /* restore cur_view */
693      context->appdata->cur_view = context->old_view;
694  #endif  #endif
695    return button;  
696      gtk_timeout_remove(context->handler_id);
697      gps_unregister_callback(appdata, context->cb_id);
698    
699      g_free(context);
700      appdata->map.context = NULL;
701  }  }
702    
703  static gboolean map_gps_update(gpointer data) {  #if (MAEMO_VERSION_MAJOR == 5) && !defined(__i386__)
704    map_context_t *context = (map_context_t*)data;  /* get access to zoom buttons */
705    static void
706    on_window_realize(GtkWidget *widget, gpointer data) {
707      if (widget->window) {
708        unsigned char value = 1;
709        Atom hildon_zoom_key_atom =
710          gdk_x11_get_xatom_by_name("_HILDON_ZOOM_KEY_ATOM"),
711          integer_atom = gdk_x11_get_xatom_by_name("INTEGER");
712        Display *dpy =
713          GDK_DISPLAY_XDISPLAY(gdk_drawable_get_display(widget->window));
714        Window w = GDK_WINDOW_XID(widget->window);
715    
716    pos_t *refpos = get_pos(context->appdata);      XChangeProperty(dpy, w, hildon_zoom_key_atom,
717    gboolean ok = (refpos!= NULL) && !isnan(refpos->lat) && !isnan(refpos->lon);                      integer_atom, 8, PropModeReplace, &value, 1);
718      }
719    }
720    #endif
721    
722    /* get reference position and go there */  /* on maemo a window is either on top or completely invisible. this */
723    gtk_widget_set_sensitive(context->gps, ok);  /* means that we only need to update the map window if its raised.  */
724    /* on ordinary desktops this is different and we always update */
725    
726    static gboolean on_focus_in(GtkWidget *widget, GdkEventFocus *event,
727                             gpointer data) {
728      printf("map got focus\n");
729      map_setup((map_context_t*)data);
730      return FALSE;
731    }
732    
733    return TRUE;  void map_update(appdata_t *appdata) {
734      printf("map_update\n");
735    #ifndef USE_MAEMO
736      if(appdata->map.context)
737        map_setup(appdata->map.context);
738    #endif
739  }  }
740    
741    /* callback called by the gps layer whenever gps state changes */
742    static void
743    gps_callback(struct gps_state *state, gpointer data) {
744      printf("map: gps callback\n");
745    }
746    
747  void map(appdata_t *appdata) {  void map(appdata_t *appdata) {
748    map_context_t context;    map_context_t *context = NULL;
   context.appdata = appdata;  
749    
750    GtkWidget *dialog = gtk_dialog_new_with_buttons(_("Map"),    /* if the map window already exists, just raise it */
751                            GTK_WINDOW(appdata->window),    if(appdata->map.context) {
752                            GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT,      printf("using existing map!\n");
753                            GTK_STOCK_CLOSE, GTK_RESPONSE_CLOSE,      gtk_window_present(GTK_WINDOW(appdata->map.context->window));
754                            NULL);      map_setup(appdata->map.context);
755        return;
756      }
757    
758  #ifndef USE_MAEMO    context = appdata->map.context = g_new0(map_context_t, 1);
759    gtk_window_set_default_size(GTK_WINDOW(dialog), 400, 350);    context->appdata = appdata;
760      context->map_complete = FALSE;
761      context->state = MAP_NONE;
762    
763      /* cleanup old (pre 0.8.7) path if it exists */
764      char *old_path = g_strdup_printf("%s/map/", appdata->image_path);
765      if(g_file_test(old_path, G_FILE_TEST_IS_DIR)) {
766        printf("old file path %s exists\n", old_path);
767        rmdir_recursive(old_path);
768      }
769    
770      /* It is recommanded that all applications share these same */
771      /* map path, so data is only cached once. The path should be: */
772      /* ~/.osm-gps-map on standard PC     (users home) */
773      /* /home/user/.osm-gps-map on Maemo5 (ext3 on internal card) */
774      /* /media/mmc2/osm-gps-map on Maemo4 (vfat on internal card) */
775    #if !defined(USE_MAEMO)
776      char *p = getenv("HOME");
777      if(!p) p = "/tmp";
778      char *path = g_strdup_printf("%s/.osm-gps-map", p);
779    #else
780    #if MAEMO_VERSION_MAJOR == 5
781      char *path = g_strdup("/home/user/.osm-gps-map");
782  #else  #else
783    gtk_window_set_default_size(GTK_WINDOW(dialog), 800, 480);    char *path = g_strdup("/media/mmc2/osm-gps-map");
784    #endif
785  #endif  #endif
786    
787    GtkWidget *hbox = gtk_hbox_new(FALSE, 0);    const char *proxy = get_proxy_uri(appdata);
788    
789    char *path = g_strdup_printf("%s/map/", appdata->image_path);    gint source = context->appdata->map.source;
790      if(!source) source = MAP_SOURCE;
791    
792    context.widget = g_object_new(OSM_TYPE_GPS_MAP,    context->widget = g_object_new(OSM_TYPE_GPS_MAP,
793                  "repo-uri", MAP_SOURCE_OPENSTREETMAP,                   "map-source",               source,
794                  "proxy-uri", get_proxy_uri(appdata),                   "tile-cache",               path,
795                  "tile-cache", path,                   "auto-center",              FALSE,
796                     "record-trip-history",      FALSE,
797                     "show-trip-history",        FALSE,
798                     proxy?"proxy-uri":NULL,     proxy,
799                   NULL);                   NULL);
800    
801    g_free(path);    g_free(path);
802    
803  #if 0    osm_gps_map_osd_classic_init(OSM_GPS_MAP(context->widget));
804    g_signal_connect(G_OBJECT(context.widget), "button-release-event",  
805                     G_CALLBACK(on_map_button_release_event), &context);  #ifdef USE_MAEMO
806      /* we don't use a stackable window here on fremantle, since */
807      /* this leaves the main window independent from the map and */
808      /* the user can e.g. still navigate the main menu */
809      context->window = hildon_window_new();
810    
811    #if (MAEMO_VERSION_MAJOR == 5) && !defined(__i386__)
812      g_signal_connect(G_OBJECT(context->window), "realize",
813                       G_CALLBACK(on_window_realize), NULL);
814    #endif // MAEMO_VERSION
815    #else
816      context->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
817  #endif  #endif
818    
819    gtk_box_pack_start_defaults(GTK_BOX(hbox), context.widget);  #ifndef USE_MAEMO
820    /* zoom button box */    gtk_window_set_default_size(GTK_WINDOW(context->window), 640, 480);
821    GtkWidget *vbox = gtk_vbox_new(FALSE,0);  #endif
   
   context.zoomin =  
     map_add_button(GTK_STOCK_ZOOM_IN, G_CALLBACK(cb_map_zoomin),  
                    &context, _("Zoom in"));  
   gtk_box_pack_start(GTK_BOX(vbox), context.zoomin, FALSE, FALSE, 0);  
   
   context.zoomout =  
     map_add_button(GTK_STOCK_ZOOM_OUT, G_CALLBACK(cb_map_zoomout),  
                    &context, _("Zoom out"));  
   gtk_box_pack_start(GTK_BOX(vbox), context.zoomout, FALSE, FALSE, 0);  
   
   context.gps =  
     map_add_button(GTK_STOCK_HOME, G_CALLBACK(cb_map_gps),  
                    &context, _("Jump to GPS position"));  
   gtk_widget_set_sensitive(context.gps, FALSE);  
   /* install handler for timed updates of the gps button */  
   context.handler_id = gtk_timeout_add(1000, map_gps_update, &context);  
   gtk_box_pack_start(GTK_BOX(vbox), context.gps, FALSE, FALSE, 0);  
822    
823    gtk_box_pack_start(GTK_BOX(hbox), vbox, FALSE, FALSE, 0);    g_signal_connect(G_OBJECT(context->widget), "focus-in-event",
824                       G_CALLBACK(on_focus_in), context);
825    
826    gtk_box_pack_start_defaults(GTK_BOX(GTK_DIALOG(dialog)->vbox), hbox);    g_signal_connect(G_OBJECT(context->widget), "configure-event",
827                       G_CALLBACK(on_map_configure), context);
828    
829    gtk_dialog_set_default_response(GTK_DIALOG(dialog), GTK_RESPONSE_CLOSE);    g_signal_connect(G_OBJECT(context->widget), "button-press-event",
830                       G_CALLBACK(on_map_button_press_event), context);
831    
832    gtk_widget_show_all(dialog);    g_signal_connect(G_OBJECT(context->widget), "button-release-event",
833                       G_CALLBACK(on_map_button_release_event), context);
834    
835    gtk_dialog_run(GTK_DIALOG(dialog));    /* install handler for timed updates of the gps button */
836      context->handler_id = gtk_timeout_add(1000, map_gps_update, context);
837    gtk_widget_destroy(dialog);    context->cb_id = gps_register_callback(appdata, gps_callback, context);
838    
839    #if MAEMO_VERSION_MAJOR == 5
840      /* prevent some of the main screen things */
841      context->old_view = appdata->cur_view;
842      appdata->cur_view = NULL;
843    #endif
844    
845      g_signal_connect(G_OBJECT(context->window), "destroy",
846                       G_CALLBACK(on_window_destroy), context);
847    
848      gtk_container_add(GTK_CONTAINER(context->window), context->widget);
849      gtk_widget_show_all(GTK_WIDGET(context->window));
850  }  }
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